Crystal Springs Winter Trail Run
Woodside, CA, USA · January 17, 2027·
Race Day Weather
45°at start
58° high
Calm
Dry
Your goal
0:00:00
Cool temps, light breeze
Runners will face a temperature rise from 45°F at the start to 56°F at the finish, with a light breeze from the north. Humidity will be moderate at 65%, so hydration is essential. With minimal wind impact, maintaining a steady pace is advisable throughout the race.
Race day forecast available in 71 days
Pre-raceRace windowPost-race
Pace Calculator
Distance: 26.2mi
0:00:00
HH:MM:SS
Pace
—
Enter a finish time to see what race day does to it.
Pace
—
Enter a finish time to see your race-day finish and True Effort, with what the weather, wind and hills do to it.
Get forecast alerts for Crystal Springs Winter Trail Run
We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.
Race weekend
Sunday, January 17
8:00 AM50K (31.1 mi)8:00 AMMarathon (26.2 mi)
8:00 AM35K (21.7 mi)8:30 AMHalf Marathon (13.1 mi)8:45 AM8K (5.0 mi)
More CA Races
San Lorenzo River Trail Run
2027-07-10 · 42.200km · Santa Cruz, CA, USA
Wild West Marathon & Ultra
2027-05-01 · 42.810km · Lone Pine, CA, USA
Golden Gate Trail Run Marathon
2027-02-06 · 42.200km · Rodeo Beach, CA, USA
Griffith Park Trail Marathon
2026-11-21 · 42.200km · Los Angeles, CA, USA
Carlsbad 5000
2027-04-04 · 5.000km · Carlsbad, CA, USA
Saddleback Marathon
2026-11-07 · 42.200km · Silverado, CA, USA